[Elecraft] KAT500 Sleep current?

[W2HX]

I think it does more than shutdown the oscillator. It seems to turn off all leds and return the unit the bypass mode. It looks really shutdown. I am referring to this checkbox "power" on the top right.


73 Eugene W2HX
Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos


-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of G4GNX
Sent: Saturday, December 9, 2023 5:41 PM
To: Elecraft Reflector <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] KAT500 Sleep current?

From the KAT500 manual:

"Idle Sleep
In some installations a 28004.5 MHz signal may be heard from an oscillator in the KAT500. If this is an issue, you can shut it down when it is not needed. Click on Idle Sleep to put a check in the radio button. The oscillator will stop running shortly after the last key press or the last data communication with other equipment and restart automatically when needed.”

From this, one might presume that’s all the ’sleep’ does - turn off the oscillator and the rest of the circuitry remains live. The spec also says: Supply Current 1.0 A max (200mA typical). I’d assume that the KAT500 would continue to draw around 200mA whilst in standby and turning off the oscillator (sleep) would make very little difference.

73,
Alan - G4GNX
South Coast UK
Elecraft K4D / KPA500 / KAT500 / IC-9700




> On 9 Dec 2023, at 22:23, W2HX <mailto:w2hx at w2hx.com> wrote:
> 
> When I use the KAT Utility to power down the KAT500, anyone know how much current it consumes in this sleeping mode? I ask because I was surprised that I had a dead battery this morning after a week or so of non-use (battery is a rechargeable Lipo so no problem) but I was wondering how "asleep" it actually is.
> 
> 
> 73 Eugene W2HX
> Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos

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